Apparent recovery of surface applied nitrogen fertilizer by a coastcross pasture

被引：0
|
作者：
Primavesi, AC [1 ]
Primavesi, O [1 ]
Corrêa, LA [1 ]
Cantarella, H [1 ]
Silva, AG [1 ]
机构：
[1] Petrobras SA, Financial Support Agreement Embrapa, BR-13560970 Sao Carlos, SP, Brazil
来源：
PROCEEDINGS OF THE XIX INTERNATIONAL GRASSLAND CONGRESS: GRASSLAND ECOSYSTEMS: AN OUTLOOK INTO THE 21ST CENTURY | 2001年
关键词：
ammonium nitrate; Cynodon dactylon cv. Coastcross; pasture; recovery; urea;
D O I：
暂无
中图分类号：
S8 [畜牧、 动物医学、狩猎、蚕、蜂];
学科分类号：
0905 ;
摘要：
Nitrogen recoveries from five levels of urea and ammonium nitrate surface-applied on coastcross pasture, grown on a dark red latosol (Hapludox), in Sao Carlos, SP, Brazil, under tropical altitude climate, were estimated. Significant differences occurred within periods (P<0.05), depending on climatic conditions. Under adequate plant growth conditions, mean N recovery from urea was about 67%, sometimes reaching 80%, of that from ammonium nitrate. Recovery of ammonium nitrate varied from 45 to 68% of applied N.
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页码：207 / 208
页数：2
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